Remove trailing whitespace from CMakeLists.txt.
Remove trailing whitespace from CMakeLists.txt.

libcheck/check,brarcher/check,libcheck/check,brarcher/check,9fcc/check,libcheck/check,brarcher/check,9fcc/check,libcheck/check,brarcher/check,9fcc/check,libcheck/check,9fcc/check,9fcc/check,brarcher/check